Add coordinator name + email, hiring + reject message defaults

Description

• Add coordinator defaults for:
  • Hiring Message
  • Rejection Message
  • Declaration Deadline
  • Coordinator Contract Name
  • Coordinator Contract Email

Related Issues

• Resolves #111 (closed)

Checklist

• I have added a changelog entry to reflect the significant changes I made.

changed milestone to %Working v2.0

added difficultymedium priohigh typeimprovement ui + 1 deleted label

requested review from @rbackx

assigned to @toberhuber

approved this merge request

enabled automatic add to merge train when the pipeline for 9e070446 succeeds

started a merge train

merged

mentioned in commit 5a2ea442

unassigned @toberhuber